文献类型：期刊文献

英文题名：Enhanced degradation of BDE209 in spiked soil by ferrous-activated persulfate process with chelating agents

作者：Peng, Hongjiang[1];Xu, Liya[1];Zhang, Wei[1];Liu, Lin[1];Liu, Fuwen[1];Lin, Kuangfei[1];Lu, Qiang[1]

机构：[1]East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2017

卷号：24

期号：3

起止页码：2442

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;EI(收录号：20242616482669);WOS:【SCI-EXPANDED(收录号:WOS:000396138800025)】；

基金：This research was supported by projects of the National Natural Science Foundation of China (41371467), the Shanghai Pujiang Program (15PJD013), and the National Key Research and Development Program (2016YFD0800405).

语种：英文

外文关键词：BDE209; Sodium persulfate; Chelating agent; Reducing agent; Ascorbic acid

摘要：In order to maintain the quantity of ferrous ions, two eco-friendly chelating agents (CAs), i.e., sodium citrate (Citrate) and sodium gluconate (Glu), have been introduced into a traditional iron activated sodium persulfate (PS) system (Fe2+/PS). The results indicated that the PS/CA/Fe2+ oxidation could be an effective method for BDE209 removal. Effects of the chelating agents, reagents dosage, and pH were evaluated in batch experiments. Glu was observed to be more effective than citrate. In addition, the rate constants (k(1)) of BDE209 removal indicated a quadratic curve relationship with initial persulfate concentrations (k(1) = -0.019 x [PS](0)(2) + 0.031 x [PS](0) + 0.007, R-2 = 0.933, [PS](0) = 0.1-1.0 M) and a good linear relationship with initial ferrous contents (k(1) = 0.109 x [Fe2+](0) + 0.002, R-2 = 0.943). Furthermore, as a reducing agent, ascorbic acid (H(2)A) could enhance the degradation rate of BDE209, which might be because H(2)A accelerated the transformation process from Fe3+- to Fe2+-gluconate complexes.